 | | Report (issue) | | The Geology of the Upper Mississippi Valley Zinc-Lead District By ALLEN V. HEYL, Jr., ALLEN F. AGNEW...cooperation with the Wisconsin Geological and Natural Histoyy Survey, the Iowa Geological Survey, and...Cultural development and facilities related to mining Field work and acknowledgments Scope of the report...geologic work in the district Geology Stratigraphy Precambrian rocks Cambrian system Upper Cambrian series...Platteville formation Decorah formation Galena dolomite Upper Ordovician series Maquoketa shale Silurian system |  | | Report (volume) | | bed__--___-____----__--------_--___----________ Minter bed ......................................^......Coteau bed overlain by Pleistocene gravel at the Reed mine, in the SW% sec. 27, T. 153 N., R. 82 W-..-..--_---...bed__-___-_____________-___ 70 17. Sections of the Minter coal bed_.---___--__________--__-_ 74 IV GEOLOGY...the western border of Ward County on the west to Anamoosej. Sheridan County, on the east. The divide between...are exposed at places in the higher parts of the area. -The Fort Union is also exposed in placesalong |  | | Journal (article/letter/editorial) | | Pleistocene sediments of the Cariboo placer mining district, British Columbia, Canada N. Eyles Glaciated...September 1994 Abstract The Cariboo placer mining district (1000 km*) sited in the Interior Plateau of...Columbia, Canada, is the premier placer gold mining district of the Province. Gold is recovered from three...postglacial fluvial gravels ( < 10 Ka), Late Wisconsin till (ca. 25-10 Ka), and “older” fluvial gravels...gravels (2.34 mm) with a mean of 1.93 mm for the mining district as a whole. The most common grain shapes are |  | | Report (issue) | | Formation, Dickie Springs-Pacific Butte Area, Fremont County, Wyoming by Jeffrey S. Loen Open-File...of the study area, lode and placer mines in the Atlantic City-South Pass mining district, and principal...map of the Dickie Springs-Pacific Butte area, Fremont County, Wyoming........................ 4 3....Wasatch Formation in the Dickie Springs-Pacific Butte area is composed of 50 to 230 m of interlayered conglomerate...Wasatch Formation in the Dickie Springs-Pacific Butte area near South Pass, Wyoming has been estimated on the |  | | Report (issue) | | massive sulfide, sedimentary exhalative, and Mississippi Valley–type (MVT) deposits. The abundance ratios...gold-uranium deposits. These deposits are hosted by quartz-pebble conglomerates, and controversy centers on...they formed as paleoplacers. In the first paper, Minter shows that the sedimentary setting of gold, pyrite...Huronian Supergroup in Canada, which also contains quartz-pebble conglomerates that host only uraninite and.......................................105 W.E.L. Minter 7. Witwatersrand gold-pyrite-uraninite deposits |  | | Journal (article/letter/editorial) | | Pleistocene glacial placer deposit, Cariboo Mining District, British Columbia, Canada NICHOLAS EYLES ...Pleistocene glacial placer deposit, Cariboo Mining District, British Columbia, Canada. Sediment. Geol....sediments of the Cariboo Mining District in central British Columbia, Canada. The area has been defined asa...volumetrically largest placers occur in fluvial gravels and valley-side fan deposits deposited during a long non-glacial...valleys, indicating repeated fluvial reworking of the valley infiUs. Braided and "wandering gravel bed" fluvial |  | | Report (volume) | | greenstone-granite terrane 9 Early Proterozoic Wisconsin magmatic terrane and associated epicratonic rocks...Proterozoic rhyolite-granite terrane of southern Wisconsin 11 Quartzite of Baraboo interval 11 Early Proterozoic...Proterozoic rhyolite-granite terrane of southern Wisconsin 27 Early Proterozoic Central. Plains orogen 27...granitic rocks as a possible heat source for Mississippi Valley-type lead-zinc deposits 33 Middle Proterozoic...cited 42 Contents Ill FIGURES 1. Map showing area covered by new basement map of the northern midcontinent |  | | Report (issue) | | Genesis of Uraniun1- and Gold-Bearing Precan1brian Quartz-Pebble Congloinerates Proceedings of a Workshop...GOLD-BEARING PRECAMBRIAN QUARTZ-PEBBLE CONGLOMERATES to w Polished specimens of quartz-pebble conglomerate...ore. Both actual size. A2 A. AB Reef, Denison Mine, Elliot Lake, Ontario. (Samples courtesy of V. Ruzicka...distribution of quartz pebbles; fine-grained pyritiferous matrix concentrated in upper two-thirds of photograph...Leader Reef, about 1500 m depth, Blyvooruitzicht Gold Mine, Carletonville, Witwatersrand. (Sample courtesy |  | | Journal (article/letter/editorial) | | sulfide ores, and can catalyze the formation of acid mine drainage. Heterotrophic anaerobes, which require...2.8 km below land surface from the Mponeng gold mine, Republic of South Africa. The bacterium highlighted...(Moser et al., 2003). Near the outcrop (recharge) area of a sedimentary formation, ground water is in contact...matter to the reductive dissolution of high-surface area Fe- and Mn oxyhydroxides (Fig. 3B). The bacteria...understood in situations such as the generation of acid mine drainage (Nordstrom and Southam, 1997). However |  | | Book | | Bagby US Geological Survey, Menlo Park, California, USA William Bagby received a Ph.D. in Earth Science from...rocks in the Sierra Madre Occidental, Mexico. His mining industry experience includes porphyry copper exploration...Berger US Geological Survey, Spokane, Washington, USA Byron Berger has been involved in exploration for...Manchester in 1973 (Ph.D.) and was then employed as a mine and exploration geologist by Falcon Mines Ltd in...Zimbabwe). In 1977 he moved to the Institute of Mining Research at the University of Rhodesia (Zimbabwe) |  | | Book | | individual deposits or districts. (in brackets country, district, deposit reviewed): Adamek P. (Scandinavia), Adams...Africa, Namibia), Chenoweth W. (Colorado Plateau, USA), Coste A. (Limousin, France), Cuney M. (granites...Grauch R (western USA), Gautier A. (breccia pipe deposits, USA), Halladay Ch.R (eastern USA), Harshman E.N...N. (Wyoming Basins, USA), Hruby J. (CSFR), Kolb S. (Bavaria, W-Germany), Krol W. (Eastern Europe), Matos... N.M., USA), Smith RB. (South Texas, USA), Tan H.B. (Canada), Thamm J. (Colorado Plateau, USA), Tauchid |  | | Report (volume) | | as the principal commodity or as a byproduct of mining other metals, based on a review of worldwide information...copper-arsenic-antimony (22a) Gold-bearing skarns (?) Epithermal quartz-alunite gold (25e) Other hydrothermal deposits:...(27a) Kuroko massive sulfide (28a) Low-sulfide gold-quartz veins (36a) Polymetallic veins (22c) Residual or...greenstone belts Residual or placer deposits: *Quartz-pebble conglomerate uranium-gold (29a) Magmatic...descriptive models were based on a single deposit or district and therefore lacked grade-tonnage distributions |  | | Book | | Fetter Lalle, London EC4P .:lEE Pllhlisiled ill the USA h)' Chapman (Iml Hall 29 West 35th Street, ,\Iou...reasons for the approach taken Mineral deposit or mine? A genetic model as the basis for exploration The...lead-zinc deposits (Mississippi Valley-type) Exploration for Mississippi Valley-type deposits Concluding...Sandstone-hosted uranium deposits of the western USA Concluding statement References ORES FORMED BY MET...towards the cost of travel: the Institution of Mining and Metallurgy, the British Council, BP Minerals |  | | Report (issue) | | IAEA-TECDOC-427 URANIUM DEPOSITS IN PROTEROZOIC QUARTZ-PEBBLE CONGLOMERATES REPORT OF THE WORKING GROUP...VIENNA, 1987 URANIUM DEPOSITS IN PROTEROZOIC QUARTZ-PEBBLE CONGLOMERATES IAEA, VIENNA, 1987 IAEA-TECDOC-427...IAEA-TEC-DOC-361 1985 Uranium Deposits in Proterozoic Quartz-Pebble Conglomerates - Desmond Pretorius - (This...this project on Uranium Deposits in Proterozoic Quartz Pebble-Conglomerates, and to his colleagues and...STATES OF AMERICA Favorability of Precambrian quartz-pebble conglomerates in the United States as uranium |  | | Journal (article/letter/editorial) | | regression and sea-level fall. In the Heidelberg area, in the northeastern part of the Witwatersrand Basin...displays several additional characteristics of incised valley systems, such as a downstream increase in depth...regions, sedimentation was probably governed by source area tectonism. © 1999 Elsevier Science B.V. All rights...mudrocks and texturally mature sandstones, whereas the upper Central Rand Group comprises predominantly sandstones...envisaged as being separated by ‘gaps’ in which no mining has taken place ( Fig. 1), and which are considered |  | | Book | | A Comprehensive Example: The Cree de District, Colorado, USA 4.11. Summary 4.12. Recommended Reading...544 545 559 561 567 571 572 CHAPTER 13. MISSISSIPPI VALLEY-TYPE (MVT) ZINC-LEAD DEPOSITS 13.1. Introduction...disseminating the information, the mine geologists and mine managers who have made the mine visits a rewarding experience...concentration required to achieve the break-even point for a mine in terms of revenue and costs. Any detailed exploration...Fig. 12.4) Mineralized breccia bodies i1 Mississippi Valley-type deposits (see Fig. 13.9) Vein-type |  | | Book | | Belfast BTI INN, UK Dr. HENRYK KUCHA University of Mining and Metallurgy, A. Mickiewicza 30 30-059 Krakow...Thermal Mesophase in Vanadiferous Bitumens from Upper Proterozoic Lava Flows (Mitov, Czechoslovakia) B...Uranium Deposits, Grants Uranium Region, New Mexico, USA C.E. Turner, N.S. Fishman, P.G. Hatcher, and E.C...of Vein Pyrobitumen in the Panel Mine, Elliot Lake Uranium District, Ontario, Canada J. Mancuso, J. Frizado...Other Forms) as the Key to Localisation of Mississippi Valley-Type Ores C.S. Spirakis and A.V. Heyl .. |  | | Journal (article/letter/editorial) | | 27-44 The MorphologyandSilverContentof Goldfromthe Upper WitwatersrandandVentersdorp Systems of the KlerksdorpGold...Proterozoic auriferous and uraniferous sedimentsof the Upper Witwatersrand and VentersdorpSystemsof the Klerksdorp...Africa comes from one singlesequenceof rocks,the Upper Witwatersrand System. The economicminerals, such...carbonatesedimentology. The conglomerates of the Upper Witwatersrand System are regardedas depositsof fluvial...Saager (1974) assumethe primary depositsof gold-quartz veins in Archean 28 T. UTTER greenstonebelts |  | | Journal (article/letter/editorial) | | generations of aqueous fluid inclusions in hydrothermal quartz from three different auriferous conglomerate horizons...supplemented by oxygen isotope analyses of hydrothermal quartz and in combination with microthermometric analyses...sedimentary control on the gold distribution (e.g., Minter, 1978) and the common microstructural and textural...scale with secondary, evidently hydrothermal gold (Minter et al., 1993). The implication of these findings...Reef, Welkom goldfield (Minter et al., 1993), occurs within hydrothermal quartz overgrowths and veinlets |  | Falconer, D.M., Craw, D., Youngson, J.H., Faure, K. (2006) Gold and sulphide minerals in Tertiary quartz pebble conglomerate gold placers, Southland, New Zealand. Ore Geology Reviews, 28 (4) 525-545 doi:10.1016/j.oregeorev.2005.03.009 | Journal (article/letter/editorial) | | com/locate/oregeorev Gold and sulphide minerals in Tertiary quartz pebble conglomerate gold placers, Southland, New...Available online 9 January 2006 Abstract Auriferous quartz pebble conglomerates (QPC) formed during Tertiary...Tertiary sedimentary recycling in the Waimumu district, Southland, New Zealand. These sediments contain fine-grained...rims. Rare coarse Au– Ag alloy is intergrown with quartz and is homogenous. Discrete grains of authigenic...2005 Elsevier B.V. All rights reserved. Keywords: Quartz pebble conglomerate; Authigenic gold; Sulphidation; |  | | Report (volume) | | Calif., 1969, Proc.: New York, Soc. Mining Engineers, Am. lost. Mining, Metall. and Petroleum Engineers...inclusion piezothermometry, experimental calibration of quartz-almandine and sillimanite-almandine [abs.]: Geol...Adams, SamuelS. Geology in potash mining and exploration [abs.]: Mining Eng., v.22,no. 1,p.41, 1970. 04574...Adams, SamuelS. Ore controls, Carlsbad potash district, southeast New Mexico, in Third symposium on salt...gastropods and biostratigraphy of the Kern River area, California: U.S. Geol. Survey Prof. Paper 642, |  | | Book (edition) | | channel comprising part of Birdfoot Delta, the upper delta plain of which appears in uppermost center...Counterparts of Barrier Islands Amazon Deep-Sea Fan; Mississippi Fan; Laurentian Fan; Bengal Deep-Sea Fan; Summary...Inflow; Homopycnal Inflow; Hypopycnal Inflow Mississippi Delta (River-Dominated) Niger Delta Tide-Dominated...of America, the Netherlands Geo- logical and Mining Society, the Geological Society of Italy, the ...shaped Depression 4 < va b bg > 100 ia Fan Valley BUTANO SONTEREN PA < yriedoed |Close-spoced| |  | | Journal (article/letter/editorial) | | 112 ß 2012 Institute of Materials, Minerals and Mining and The AusIMM Published by Maney on behalf of...represent an enormous geochemical anomaly. This area of 300 km by 100 km has produced 30% of all the... reason is the need for exploration success if mining is to prosper: the relatively small Evander goldfield...literature …’ (e.g. Pretorius, 1976, 1981, 1991; Minter, 1978, 1979) and some intensive sedimentologically-based...al. (1995), Phillips and Law (2000), Frimmel and Minter (2002) and Johnson et al. (2006) rocks at its |  | | Journal (article/letter/editorial) | | recirculating flume. Sand composed of a mixture of quartz, pyroxene, magnetite, and lead was moved over a...flow velocity, depth of flow, grain size of the quartz sand, and clast size systematically changed during...that of the pebble population than that of the quartz sand; (3) flow velocities capable of creating a...a suspension cloud from the coarse-grained quartz sand population; (4) a change in the regional slope...enriched, erosional lag upslope from the ultimate area of depositional placer accumulation. These conditions |  | | Report (issue) | | Brooks Range, Alaska, in 1979, prior to drilling or mining. Ground water seeping from the Red Dog deposit...«2. of the eccisemene of the Misima Gold-Silver Mine, Papua New Guinea ........ .G. I. Wilson and R....C. Barwick eae ie Discovery. The McLaughlin Gold Mine, Napa, Yolo, and Lake Counties, California Fre... by John E. Tilton, addresses that treacherous area of misunderstanding which seems to separate geologists...the komatiitic ultramafic flows of the Kambalda area, Western Australia, formed deep thermal erosion |
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